Subscriber login


Forgot your password?

Library card login

Other

amnion

Pronunciation: /ˈamnɪən/
Definition of amnion

noun (plural amnions or amnia)

  • the innermost membrane that encloses the embryo of a mammal, bird, or reptile.

Origin:

mid 17th century: from Greek, 'caul', diminutive of amnos 'lamb'

amnion in other Oxford dictionaries

Definition of amnion in the US English dictionary

Nearby words

  |  Cite

More words in this category

Oxford Dictionaries Pro

For Oxford's best resources for writers, plus thesaurus, audio, and 1.9m examples.

GET PRO ►

Shop for an Oxford dictionary
Find the perfect Oxford dictionary for you in our online shop.
SHOP NOW ►

Word of the day

cur

/ kəː /
noun
an aggressive or unkempt dog …